summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/i915simple/i915_screen.c
blob: a3de38d5860b87e60865a1dbeec486c46fb624cd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
/**************************************************************************
 * 
 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/


#include "util/u_memory.h"
#include "util/u_simple_screen.h"
#include "pipe/internal/p_winsys_screen.h"
#include "pipe/p_inlines.h"
#include "util/u_string.h"

#include "i915_reg.h"
#include "i915_context.h"
#include "i915_screen.h"
#include "i915_texture.h"
#include "i915_winsys.h"


static const char *
i915_get_vendor( struct pipe_screen *pscreen )
{
   return "Tungsten Graphics, Inc.";
}


static const char *
i915_get_name( struct pipe_screen *pscreen )
{
   static char buffer[128];
   const char *chipset;

   switch (i915_screen(pscreen)->pci_id) {
   case PCI_CHIP_I915_G:
      chipset = "915G";
      break;
   case PCI_CHIP_I915_GM:
      chipset = "915GM";
      break;
   case PCI_CHIP_I945_G:
      chipset = "945G";
      break;
   case PCI_CHIP_I945_GM:
      chipset = "945GM";
      break;
   case PCI_CHIP_I945_GME:
      chipset = "945GME";
      break;
   case PCI_CHIP_G33_G:
      chipset = "G33";
      break;
   case PCI_CHIP_Q35_G:
      chipset = "Q35";
      break;
   case PCI_CHIP_Q33_G:
      chipset = "Q33";
      break;
   default:
      chipset = "unknown";
      break;
   }

   util_snprintf(buffer, sizeof(buffer), "i915 (chipset: %s)", chipset);
   return buffer;
}


static int
i915_get_param(struct pipe_screen *screen, int param)
{
   switch (param) {
   case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
      return 8;
   case PIPE_CAP_NPOT_TEXTURES:
      return 1;
   case PIPE_CAP_TWO_SIDED_STENCIL:
      return 1;
   case PIPE_CAP_GLSL:
      return 0;
   case PIPE_CAP_S3TC:
      return 0;
   case PIPE_CAP_ANISOTROPIC_FILTER:
      return 0;
   case PIPE_CAP_POINT_SPRITE:
      return 0;
   case PIPE_CAP_MAX_RENDER_TARGETS:
      return 1;
   case PIPE_CAP_OCCLUSION_QUERY:
      return 0;
   case PIPE_CAP_TEXTURE_SHADOW_MAP:
      return 1;
   case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
      return 11; /* max 1024x1024 */
   case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
      return 8;  /* max 128x128x128 */
   case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
      return 11; /* max 1024x1024 */
   default:
      return 0;
   }
}


static float
i915_get_paramf(struct pipe_screen *screen, int param)
{
   switch (param) {
   case PIPE_CAP_MAX_LINE_WIDTH:
      /* fall-through */
   case PIPE_CAP_MAX_LINE_WIDTH_AA:
      return 7.5;

   case PIPE_CAP_MAX_POINT_WIDTH:
      /* fall-through */
   case PIPE_CAP_MAX_POINT_WIDTH_AA:
      return 255.0;

   case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
      return 4.0;

   case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
      return 16.0;

   default:
      return 0;
   }
}


static boolean
i915_is_format_supported( struct pipe_screen *screen,
                          enum pipe_format format, 
                          enum pipe_texture_target target,
                          unsigned tex_usage, 
                          unsigned geom_flags )
{
   static const enum pipe_format tex_supported[] = {
      PIPE_FORMAT_R8G8B8A8_UNORM,
      PIPE_FORMAT_A8R8G8B8_UNORM,
      PIPE_FORMAT_R5G6B5_UNORM,
      PIPE_FORMAT_L8_UNORM,
      PIPE_FORMAT_A8_UNORM,
      PIPE_FORMAT_I8_UNORM,
      PIPE_FORMAT_A8L8_UNORM,
      PIPE_FORMAT_YCBCR,
      PIPE_FORMAT_YCBCR_REV,
      PIPE_FORMAT_S8Z24_UNORM,
      PIPE_FORMAT_NONE  /* list terminator */
   };
   static const enum pipe_format surface_supported[] = {
      PIPE_FORMAT_A8R8G8B8_UNORM,
      PIPE_FORMAT_R5G6B5_UNORM,
      PIPE_FORMAT_S8Z24_UNORM,
      /*PIPE_FORMAT_R16G16B16A16_SNORM,*/
      PIPE_FORMAT_NONE  /* list terminator */
   };
   const enum pipe_format *list;
   uint i;

   if(tex_usage & PIPE_TEXTURE_USAGE_RENDER_TARGET)
      list = surface_supported;
   else
      list = tex_supported;

   for (i = 0; list[i] != PIPE_FORMAT_NONE; i++) {
      if (list[i] == format)
         return TRUE;
   }

   return FALSE;
}


static void
i915_destroy_screen( struct pipe_screen *screen )
{
   struct pipe_winsys *winsys = screen->winsys;

   if(winsys->destroy)
      winsys->destroy(winsys);

   FREE(screen);
}


static struct pipe_transfer*
i915_get_tex_transfer(struct pipe_screen *screen,
                      struct pipe_texture *texture,
                      unsigned face, unsigned level, unsigned zslice,
                      enum pipe_transfer_usage usage, unsigned x, unsigned y,
                      unsigned w, unsigned h)
{
   struct i915_texture *tex = (struct i915_texture *)texture;
   struct i915_transfer *trans;
   unsigned offset;  /* in bytes */

   if (texture->target == PIPE_TEXTURE_CUBE) {
      offset = tex->image_offset[level][face];
   }
   else if (texture->target == PIPE_TEXTURE_3D) {
      offset = tex->image_offset[level][zslice];
   }
   else {
      offset = tex->image_offset[level][0];
      assert(face == 0);
      assert(zslice == 0);
   }

   trans = CALLOC_STRUCT(i915_transfer);
   if (trans) {
      pipe_texture_reference(&trans->base.texture, texture);
      trans->base.format = trans->base.format;
      trans->base.x = x;
      trans->base.y = y;
      trans->base.width = w;
      trans->base.height = h;
      trans->base.block = texture->block;
      trans->base.nblocksx = texture->nblocksx[level];
      trans->base.nblocksy = texture->nblocksy[level];
      trans->base.stride = tex->stride;
      trans->offset = offset;
      trans->base.usage = usage;
   }
   return &trans->base;
}

static void
i915_tex_transfer_destroy(struct pipe_transfer *trans)
{
   pipe_texture_reference(&trans->texture, NULL);
   FREE(trans);
}

static void *
i915_transfer_map( struct pipe_screen *screen,
                   struct pipe_transfer *transfer )
{
   struct i915_texture *tex = (struct i915_texture *)transfer->texture;
   char *map;
   unsigned flags = 0;

   if (transfer->usage != PIPE_TRANSFER_WRITE)
      flags |= PIPE_BUFFER_USAGE_CPU_READ;

   if (transfer->usage != PIPE_TRANSFER_READ)
      flags |= PIPE_BUFFER_USAGE_CPU_WRITE;

   map = pipe_buffer_map( screen, tex->buffer, flags );
   if (map == NULL)
      return NULL;

   if (transfer->texture &&
       (flags & PIPE_BUFFER_USAGE_CPU_WRITE)) 
   {
      /* Do something to notify contexts of a texture change.  
       */
      /* i915_screen(screen)->timestamp++; */
   }
   
   return map + i915_transfer(transfer)->offset +
      transfer->y / transfer->block.height * transfer->stride +
      transfer->x / transfer->block.width * transfer->block.size;
}

static void
i915_transfer_unmap(struct pipe_screen *screen,
                    struct pipe_transfer *transfer)
{
   struct i915_texture *tex = (struct i915_texture *)transfer->texture;
   pipe_buffer_unmap( screen, tex->buffer );
}



/**
 * Create a new i915_screen object
 */
struct pipe_screen *
i915_create_screen(struct pipe_winsys *winsys, uint pci_id)
{
   struct i915_screen *i915screen = CALLOC_STRUCT(i915_screen);

   if (!i915screen)
      return NULL;

   switch (pci_id) {
   case PCI_CHIP_I915_G:
   case PCI_CHIP_I915_GM:
      i915screen->is_i945 = FALSE;
      break;

   case PCI_CHIP_I945_G:
   case PCI_CHIP_I945_GM:
   case PCI_CHIP_I945_GME:
   case PCI_CHIP_G33_G:
   case PCI_CHIP_Q33_G:
   case PCI_CHIP_Q35_G:
      i915screen->is_i945 = TRUE;
      break;

   default:
      debug_printf("%s: unknown pci id 0x%x, cannot create screen\n", 
                   __FUNCTION__, pci_id);
      return NULL;
   }

   i915screen->pci_id = pci_id;

   i915screen->screen.winsys = winsys;

   i915screen->screen.destroy = i915_destroy_screen;

   i915screen->screen.get_name = i915_get_name;
   i915screen->screen.get_vendor = i915_get_vendor;
   i915screen->screen.get_param = i915_get_param;
   i915screen->screen.get_paramf = i915_get_paramf;
   i915screen->screen.is_format_supported = i915_is_format_supported;
   i915screen->screen.get_tex_transfer = i915_get_tex_transfer;
   i915screen->screen.tex_transfer_destroy = i915_tex_transfer_destroy;
   i915screen->screen.transfer_map = i915_transfer_map;
   i915screen->screen.transfer_unmap = i915_transfer_unmap;

   i915_init_screen_texture_functions(&i915screen->screen);
   u_simple_screen_init(&i915screen->screen);

   return &i915screen->screen;
}